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BQ2040SN PDF预览

BQ2040SN

更新时间: 2024-10-27 22:48:27
品牌 Logo 应用领域
德州仪器 - TI 电源电路电源管理电路光电二极管仪表
页数 文件大小 规格书
33页 198K
描述
Gas Gauge IC With SMBus Interface

BQ2040SN 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:0.150 INCH, SOIC-16
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.14Is Samacsys:N
可调阈值:NO模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-PDSO-G16长度:9.9 mm
信道数量:1功能数量:1
端子数量:16最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):NOT SPECIFIED电源:3/6.5 V
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Power Management Circuits最大供电电流 (Isup):0.25 mA
最大供电电压 (Vsup):6.5 V最小供电电压 (Vsup):3 V
标称供电电压 (Vsup):4.25 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mmBase Number Matches:1

BQ2040SN 数据手册

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bq2040  
Gas Gauge IC With SMBus Interface  
The bq2040 estimates battery self-  
discharge based on an internal  
Features  
General Description  
timer and temperature sensor and  
The bq2040 Gas Gauge IC With  
user-programmable rate informa-  
SMBus Interface is intended for  
tion stored in external EEPROM.  
battery-pack or in-system installa-  
The bq2040 also automatically re-  
tion to maintain an accurate record  
calibrates or “learns” battery capac-  
of available battery charge. The  
ity in the full course of a discharge  
bq2040 directly supports capacity  
cycle from full to empty.  
Provides accurate measurement  
of available charge in NiCd,  
NiMH, and Li-Ion batteries  
Supports SBS v1.0 data set and  
two-wire interface  
monitoring for NiCd, NiMH, and Li-  
Monitors charge FET in Li-Ion  
Ion battery chemistries.  
The bq2040 may operate directly  
from three nickel chemistry cells.  
With the REF output and an exter-  
nal transistor, a simple, inexpensive  
regulator can be built to provide  
VCC for other battery cell configu-  
rations.  
pack protection circuit  
The bq2040 uses the System Man-  
agement Bus v1.0 (SMBus) protocol  
and supports the Smart Battery  
Data (SBData) commands. The  
bq2040 also supports the SBData  
charge control functions. Battery  
state-of-charge, remaining capacity,  
remaining time, and chemistry are  
available over the serial link.  
Battery-charge state can be directly  
indicated using a four-segment LED  
display to graphically depict battery  
full-to-empty in 25% increments.  
Designed for battery pack inte-  
gration  
- Low operating current  
- Complete circuit can fit on less  
than ¾ square inch of PCB  
space  
An external EEPROM is used to  
program initial values into the  
bq2040 and is necessary for proper  
operation.  
Supports SBS charge control  
commands for NiCd, NiMH, and  
Li-Ion  
Drives a four-segment LED dis-  
play for remaining capacity  
indication  
16-pin narrow SOIC  
Pin Connections  
Pin Names  
SB  
Battery sense input  
VCC  
3.0–6.5V  
PSTAT Protector status input  
SMBD SMBus data input/output  
SMBC SMBus clock  
V
1
2
3
4
5
6
16  
15  
14  
13  
12  
11  
V
ESCL  
EEPROM clock  
CC  
OUT  
ESDA EEPROM data  
ESCL  
ESDA  
REF  
LED1-4 LED segment 1-4  
SMBC  
SMBD  
PSTAT  
SB  
REF  
Voltage reference output  
EEPROM supply output  
VSS  
SR  
System ground  
LED  
LED  
LED  
LED  
1
2
3
VOUT  
Sense resistor input  
Display control input  
DISP  
7
8
10  
9
DISP  
SR  
4
V
SS  
16-Pin Narrow SOIC  
PN204001.eps  
SLUS005–JUNE 1999 E  
1

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